2667563 has 4 divisors (see below), whose sum is σ = 2783568. Its totient is φ = 2551560.

The previous prime is 2667503. The next prime is 2667569. The reversal of 2667563 is 3657662.

Added to its reverse (3657662) it gives a square (6325225 = 2515²).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3657662 = 2 ⋅1828831.

It is a cyclic number.

It is not a de Polignac number, because 2667563 - 2⁶ = 2667499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2667569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57968 + ... + 58013.

It is an arithmetic number, because the mean of its divisors is an integer number (695892).

2^2667563 is an apocalyptic number.

2667563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2667563 is a deficient number, since it is larger than the sum of its proper divisors (116005).

2667563 is a wasteful number, since it uses less digits than its factorization.

2667563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116004.

The product of its digits is 45360, while the sum is 35.

The square root of 2667563 is about 1633.2675837106. The cubic root of 2667563 is about 138.6877902002.

Adding to 2667563 its reverse (3657662), we get a square (6325225 = 2515²).

Subtracting 2667563 from its reverse (3657662), we obtain a palindrome (990099).

The spelling of 2667563 in words is "two million, six hundred sixty-seven thousand, five hundred sixty-three".